Guanghao Zhang created HBASE-17077:
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             Summary: Don't copy the replication queue which belong to the peer 
have been deleted
                 Key: HBASE-17077
                 URL: https://issues.apache.org/jira/browse/HBASE-17077
             Project: HBase
          Issue Type: Improvement
            Reporter: Guanghao Zhang
            Assignee: Guanghao Zhang
            Priority: Minor


When a region server is dead, then other live region servers will transfer the 
dead rs's replication queue to their own queue. Now the live rs first copy the 
wals queue to its own znode, then create a new replication source to replicate 
the wals. But if the queue belong to a peer have been deleted, it copy the 
queue, too. The current steps is:
1. copy the queue to its own znode
2. found the queue belong to a peer have been deleted
3. remove the queue and don't create a new replication source for it

There is a small improvement. The live region server doesn't need to copy the 
queue to its own znode. The new steps is:
1. found the queue belong to a peer have been deleted
2. remove the queue directly instead of copy it



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